Graphitic Carbon-Coated FeSe2 Hollow Nanosphere-Decorated Reduced Graphene Oxide Hybrid Nanofibers as an Efficient Anode Material for Sodium Ion Batteries

Jung Sang Cho, Jung Kul Lee, Yun Chan Kang

Research output: Contribution to journalArticle

82 Citations (Scopus)

Abstract

A novel one-dimensional nanohybrid comprised of conductive graphitic carbon (GC)-coated hollow FeSe2 nanospheres decorating reduced graphene oxide (rGO) nanofiber (hollow nanosphere FeSe2 @GC-rGO) was designed as an efficient anode material for sodium ion batteries and synthesized by introducing the nanoscale Kirkendall effect into the electrospinning method. The electrospun nanofibers transformed into hollow nanosphere FeSe2 @GC-rGO hybrid nanofibers through a Fe@GC-rGO intermediate. The discharge capacities of the bare FeSe2 nanofibers, nanorod FeSe2-rGO-amorphous carbon (AC) hybrid nanofibers, and hollow nanosphere FeSe2 @GC-rGO hyrbid nanofibers at a current density of 1 A g -1 for the 150th cycle were 63, 302, and 412 mA h g -1, respectively, and their corresponding capacity retentions measured from the 2nd cycle were 11, 73, and 82%, respectively. The hollow nanosphere FeSe2 @GC-rGO hybrid nanofibers delivered a high discharge capacity of 352 mA h g-1 even at an extremely high current density of 10 A g -1. The enhanced electrochemical properties of the hollow nanosphere FeSe2 @GC-rGO composite nanofibers arose from the synergetic effects of the FeSe2 hollow morphology and highly conductive rGO matrix.

Original languageEnglish
Article number23699
JournalScientific Reports
Volume6
DOIs
Publication statusPublished - 2016 Apr 1

Fingerprint

Graphite
Nanospheres
Nanofibers
Oxides
Anodes
Carbon
Sodium
Ions
Current density
Amorphous carbon
Electrospinning
Nanorods
Electrochemical properties
Composite materials

ASJC Scopus subject areas

  • General

Cite this

@article{908a1259ddf34d43820ed17804d94660,
title = "Graphitic Carbon-Coated FeSe2 Hollow Nanosphere-Decorated Reduced Graphene Oxide Hybrid Nanofibers as an Efficient Anode Material for Sodium Ion Batteries",
abstract = "A novel one-dimensional nanohybrid comprised of conductive graphitic carbon (GC)-coated hollow FeSe2 nanospheres decorating reduced graphene oxide (rGO) nanofiber (hollow nanosphere FeSe2 @GC-rGO) was designed as an efficient anode material for sodium ion batteries and synthesized by introducing the nanoscale Kirkendall effect into the electrospinning method. The electrospun nanofibers transformed into hollow nanosphere FeSe2 @GC-rGO hybrid nanofibers through a Fe@GC-rGO intermediate. The discharge capacities of the bare FeSe2 nanofibers, nanorod FeSe2-rGO-amorphous carbon (AC) hybrid nanofibers, and hollow nanosphere FeSe2 @GC-rGO hyrbid nanofibers at a current density of 1 A g -1 for the 150th cycle were 63, 302, and 412 mA h g -1, respectively, and their corresponding capacity retentions measured from the 2nd cycle were 11, 73, and 82{\%}, respectively. The hollow nanosphere FeSe2 @GC-rGO hybrid nanofibers delivered a high discharge capacity of 352 mA h g-1 even at an extremely high current density of 10 A g -1. The enhanced electrochemical properties of the hollow nanosphere FeSe2 @GC-rGO composite nanofibers arose from the synergetic effects of the FeSe2 hollow morphology and highly conductive rGO matrix.",
author = "Cho, {Jung Sang} and Lee, {Jung Kul} and Kang, {Yun Chan}",
year = "2016",
month = "4",
day = "1",
doi = "10.1038/srep23699",
language = "English",
volume = "6",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",

}

TY - JOUR

T1 - Graphitic Carbon-Coated FeSe2 Hollow Nanosphere-Decorated Reduced Graphene Oxide Hybrid Nanofibers as an Efficient Anode Material for Sodium Ion Batteries

AU - Cho, Jung Sang

AU - Lee, Jung Kul

AU - Kang, Yun Chan

PY - 2016/4/1

Y1 - 2016/4/1

N2 - A novel one-dimensional nanohybrid comprised of conductive graphitic carbon (GC)-coated hollow FeSe2 nanospheres decorating reduced graphene oxide (rGO) nanofiber (hollow nanosphere FeSe2 @GC-rGO) was designed as an efficient anode material for sodium ion batteries and synthesized by introducing the nanoscale Kirkendall effect into the electrospinning method. The electrospun nanofibers transformed into hollow nanosphere FeSe2 @GC-rGO hybrid nanofibers through a Fe@GC-rGO intermediate. The discharge capacities of the bare FeSe2 nanofibers, nanorod FeSe2-rGO-amorphous carbon (AC) hybrid nanofibers, and hollow nanosphere FeSe2 @GC-rGO hyrbid nanofibers at a current density of 1 A g -1 for the 150th cycle were 63, 302, and 412 mA h g -1, respectively, and their corresponding capacity retentions measured from the 2nd cycle were 11, 73, and 82%, respectively. The hollow nanosphere FeSe2 @GC-rGO hybrid nanofibers delivered a high discharge capacity of 352 mA h g-1 even at an extremely high current density of 10 A g -1. The enhanced electrochemical properties of the hollow nanosphere FeSe2 @GC-rGO composite nanofibers arose from the synergetic effects of the FeSe2 hollow morphology and highly conductive rGO matrix.

AB - A novel one-dimensional nanohybrid comprised of conductive graphitic carbon (GC)-coated hollow FeSe2 nanospheres decorating reduced graphene oxide (rGO) nanofiber (hollow nanosphere FeSe2 @GC-rGO) was designed as an efficient anode material for sodium ion batteries and synthesized by introducing the nanoscale Kirkendall effect into the electrospinning method. The electrospun nanofibers transformed into hollow nanosphere FeSe2 @GC-rGO hybrid nanofibers through a Fe@GC-rGO intermediate. The discharge capacities of the bare FeSe2 nanofibers, nanorod FeSe2-rGO-amorphous carbon (AC) hybrid nanofibers, and hollow nanosphere FeSe2 @GC-rGO hyrbid nanofibers at a current density of 1 A g -1 for the 150th cycle were 63, 302, and 412 mA h g -1, respectively, and their corresponding capacity retentions measured from the 2nd cycle were 11, 73, and 82%, respectively. The hollow nanosphere FeSe2 @GC-rGO hybrid nanofibers delivered a high discharge capacity of 352 mA h g-1 even at an extremely high current density of 10 A g -1. The enhanced electrochemical properties of the hollow nanosphere FeSe2 @GC-rGO composite nanofibers arose from the synergetic effects of the FeSe2 hollow morphology and highly conductive rGO matrix.

UR - http://www.scopus.com/inward/record.url?scp=84962791619&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84962791619&partnerID=8YFLogxK

U2 - 10.1038/srep23699

DO - 10.1038/srep23699

M3 - Article

AN - SCOPUS:84962791619

VL - 6

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 23699

ER -